Pipe covering



T. S; TULIEN P IPE covsnmq Filed Sept. 11, 1940 July 13, 1943.

INVENTOR 72/25 6. 7Z/L/EN. W 4

ATTORNEY Patented July 13, 1943 UNITED STATES PATENT OFFICE- PIPECOVERING y Hills, Calif asslgnor to Johns-Manville Corporation, NewYork, N. 1., a corporation of New York Application September 11, 1940,Serial No. 356,284

1 Claim. (Cl. 154-44) Ture S. Tulien, Beyer] The invention relates to aninsulated pipe covering, and more particularly to an insulated pipecovering which is readily removable and adjustable.

As it is often necessary to inspect, repair or otherwise treat pipe andlike objects which have been insulated and covered, it is desirable thatthe pipe insulation and covering be easily removed and adjusted.Furthermore, the insulated cover must have such qualities as highresistance to transmission of heat, lightness of weight, ermanence andeconomy.

It is an object of the invention to provide a removable covering forpipes and the like.

It is a more specfic object of the invention to provide a flanged pipecovering adapted to surround an insulated pipe with a fastening meanstensionally engaging the flanges.

Other objects and advantages will appear from the following descriptionand drawing.

In the drawing, which illustrates-an embodiment of the invention andwherein like reference characters indicate like parts:

Fig. I is a fragmentary perspective view of an insulated pipe assemblyembodying the inventlon;

Fig. II is a perspective view of a jacket element in' one embodiment ofthe invention;

Fig. III is a perspective view of a fastening means in one embodiment ofthe invention;

Fig. IV is a fragmentary front view of an insulated pipe assemblyembodying the invention;

Fig. V is a sectional view taken on line V-V of Fig. IV.

In protecting a pipe or like object from heat loss, the pipe I iscovered with a layer of any suitable insulating material 2, as shown inFigs. I and II. It is preferred that the insulation has suflicientrigidity to support the weight of the outer covering.

For protection, a casing 3 is placed around both the pipe and theinsulation. Casing 3 may be a thin, metallic cylinder which issufiiciently fiex ible to he opened along its length and placed over theinsulation 2. 'it is preferred that casing 3 he formed of two thinsemi-cylindrical sheets i and of metal which will fit closely around theinsulating material 2 when placed thereon. Th sheets should be formedwith one of their longitudinal edges joined in a pivot or hingearrangement so that the casing may be opened by pivoting each sheet onone edge. While the sheets l and 5 may be pivotally joined in anyconventional manner, it is preferred that one longitudinal edge of eachsheet be bent to form a small open cylinder extending lengthwise alongthe edge of each sheet, as shown in Fig. V. The

cylinders should be formed opposite to each other I so that when thesheets are placed around insulation, the extreme edge of each sheet willrest within the cylinder of the adjacent sheet.

Casing 3 is secured over insulation 2 by coupling B. Coupling 6 maycomprise a jacket I and a fastening means, such as anchor 8. The jacketmay be a relatively thin metal sheet rolled into a cylinder with eachedge of the sheet formed into a retroverted side flange, as shown inFig. II. The flanges 9 and i0 may be formed by bending each longitudinaledge H out and back toward the adjacent surface of the cylinder witheach flange forming an acute angle with respect to such surface. Theangle formed by the flanges should be parallel to the longitudinal axisof the cylinder so that the diameter of the cylinder is the same at eachend. 'It is important that flanges 9 and Ill be formed so that the widthof each flange is similarly greater at one end of. the cylinder than atthe other. Thus, each flange will be similarly expanded in width alongits length.

The jacket I is tightened over casing 3 by a fastening means such asanchor 8. Anchor 8 is formed by rolling a thin metal sheet into acylinder and partially flattening the cylinder as shown in Fig. III. Theanchor will then comprise a metallic back portion having flanges i2extending toward each other and making an acute angle with the backportion. It is important that the anchor be tapered lengthwise so thatthe outer width is smaller at one end than at the other. The degree oftaper should be the same as that of the outer edge ll of flanges 8 andIn so that the surface contour of the anchor is similar to that of theflanges.

In engaging anchor 8 with jacket I, the larger 1 end of the anchor isplaced over the smaller end of flanges 9 and it and with the innersurfaces of flanges i2 contiguous to the surfaces of flanges ii and illadjacent the outer surface of the cylinder portion of the jacket. Whenthe anchor is forced along flanges and id,- the flanges are pulledtogether thus decreasing the diameter of the jacket.

When assembling the pipe covering, ti e iiisulation 2 is placed aroundpipe 3 and casing 33 positioned over the insulation. Jacket l is nowplaced over the casing, preferably as shown in Figs. II and V, with itsflanges i3 and Ill lying on opposite sides of the hinge of the casingand anchor 8 is engaged over flanges 9 and iii. When the diameter of thejacket is decreased sufficiently to pull the jacket around the casing,thus holding the casing and insulation securely in place.

Although coupling 6 may be placed in any position on casing 3, it ispreferred, when a plurality of casing are used, that the coupling beplaced over the joint formed by the casing s, as shown in FigQ'IV. In'this way, the assembly is mademore'wa'tertight and the casing is bettersecured on the insulation.

While the preferred embodiment employs a metallic casing 3 held in placeby coupling 6, it is to be understood that the flanges 9 and I0 may2,324,181 a v r the anchor is completely over flanges 9 and I 6, used,the cylinder portion of the upper sheet and the opposite edge of theupper sheet should be outside. In this way, water is prevented fromentering the casing.

It is to .be understood that the details herein given are for purposesof illustration only and that the invention is to be limited only by thescope of the appended claim.

I claim: I

An insulated covering assembly for a pipe, said assembly comprisinginsulation surrounding the pipe, a casing surrounding said insulationand inbe formed on the edges of the casing-so that the covering andsecuring elements are all in' one piece. When this variation isemployed, one end of a casing section must be completely covered by theend of the next adjacent casing section to make the assembly watertight.Also coupling 6, as shown, may be employed over the insulation alone orover such insulation having any type of covering. In the latter case,the coupling will eluding hingedly connected semi-cylindrical sec-.tions having free overlapping edges, the hinge connecting said sectionsextending longitudinally of the pipe, and a coupling member for saidcasing, the coupling member comprising a split sleeve having itslongitudinal edges at the split retroverted to form outwardly turnedflanges, the free edges of which gradually diverge, said flanges lyingadjacent to and on opposite sides of said hinge, and an attaching clampcomprising an elongated channeled member engaged over said flanges andhaving an interior width which gradually diverges in correspondence withthe divergence of said flanges whereby said flanges are drawn toward oneanother as said channeled member is moved longitudinally on said easinginto attaching position.

. TURE S. TULIEN.

